There are at least seven bands by this name:
1) Volcano is a Japanaese Thrash metal band. Current line up: Guitar - She-ja (ex-Gargoyle,Animetal), Vocals - Nov (Aion, Zigoku Quartet), Bass - Akira(Youthquake). Released 3 full albums: Violent (2000) , Davi (2001) & Mythology(2011).
2) Volcano is a punk/folk/reggae supergroup band, formed by Meat Puppets frontman Curt Kirkwood, Sublime drummer Bud Gaugh, and session musicians Mike Stand and Jon Poutney. They have released only one album (with a cheap, hand-drawn inkpen front cover drawn by Curt), which quickly sold out at Skunk records, followed by only eight concerts in support of the release.

Currently, its only available form is a downloadably zip file on an mp3 site. The band split up after the album was released.
3) Volcano! is a noise rock band from Chicago, there are three members, Mark Cartwright, Sam Scranton and Aaron With.
4) Volcano is also a Jamaican reggae act. 5) A Brazilian Thrash metal band (Actually spelt Vulcano)
6) A German stoner rock band from Berlin.
7) A European dance music act who released several vocal house singles through Deconstruction Records in the mid-90s. Read more on Last.fm.

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